https://www.szkwic.com/news/en/ Shenzhen component sourcing, BOM matching, alternatives and procurement notes. en Sat, 31 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N071.html https://www.szkwic.com/news/en/N071.html A BOM contains this line: C23, 100nF, 0603, NC. Purchasing asks whether to buy it. The warehouse looks at the quantity. Production receives a placement file and feeder list. One person treats NC as do-not-populate, anot Sat, 31 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N070.html https://www.szkwic.com/news/en/N070.html A buyer decides to send the next BOM to the same supplier for a simple reason: every earlier order matched what was promised. The part number was correct, availability was described honestly, differences in alternatives Thu, 29 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N069.html https://www.szkwic.com/news/en/N069.html A 48 V monitoring board used a 10 kOhm resistor as a bleeder. The original RC1206FR-0710KL was a 1206, 1% part rated at 250 mW. A proposed RC0603FR-0710KL had the same resistance and tolerance in a 0603 case. At 48 V, ho Fri, 23 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N068.html https://www.szkwic.com/news/en/N068.html A customer recently asked whether two 0805 10 uF/25 V X5R capacitors could be swapped because every short specification matched. The original was CL21A106KAYNNNE. On a 12 V rail, their DC-bias curves differed enough to c Wed, 21 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N067.html https://www.szkwic.com/news/en/N067.html A customer sent a small appliance board BOM last week. His usual AO3400A was out of stock and he had a reel of Si2302, in SOT-23, and asked if they were drop-in replacements. We tested both on the same board. At no load, Mon, 19 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N066.html https://www.szkwic.com/news/en/N066.html A customer who builds power modules forwarded a PCN email from his supplier last week, asking whether the board had to be re-qualified because the part was being discontinued. It turned out to be a site transfer: same pa Fri, 16 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N065.html https://www.szkwic.com/news/en/N065.html A customer brought in a board already in production and asked whether he could simply swap an STM32F103C8T6 for a GD32F103C8T6 - same footprint, same headline specs. The same pin-out is only the entry ticket. Failures Wed, 14 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N064.html https://www.szkwic.com/news/en/N064.html The question we hear most: how long will the STM32F103 still be around? It is not discontinued, but it is no longer the promoted family - stock is healthy and prices have settled, and new designs should evaluate alternat Mon, 12 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N063.html https://www.szkwic.com/news/en/N063.html Getting an EOL notice does not mean your project stops. Work through five steps: confirm the scope, find the official replacement, compare parameters line by line, verify on a small batch, then lock supply. Shenzhen Kewe Fri, 09 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N062.html https://www.szkwic.com/news/en/N062.html Conclusion first: before your first order with a new supplier, settle four things besides price — MOQ and minimum packaging, invoicing and whether prices include tax, payment terms, and lead time plus acceptance criteria Wed, 07 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N061.html https://www.szkwic.com/news/en/N061.html Short answer: send your BOM as Excel or CSV and you will normally get a first-pass quote within 2–4 hours and a complete quotation the same working day; if obsolete (EOL) parts or specific date codes are involved, allow Mon, 05 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N060.html https://www.szkwic.com/news/en/N060.html Short answer: yes, small-batch samples are welcome. Most ICs, connectors, crystals, switches and relays can be supplied from a single piece; small passives such as chip resistors, capacitors and inductors usually start a Fri, 02 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N059.html https://www.szkwic.com/news/en/N059.html Short answer: spot means the parts are on hand and can ship the same or next working day; backorder means they must be ordered from the manufacturer or a franchised distributor and lead time is quoted in weeks. To get an Fri, 02 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N058.html https://www.szkwic.com/news/en/N058.html Short answer: BOM kitting is normally not charged per line as a service fee. Instead every line is quoted with a tax-inclusive unit price, lead time and minimum order quantity, and the sourcing service is usually already Fri, 02 Oct 2026 00:00:00 +0000 https://www.szkwic.com/news/en/N057.html https://www.szkwic.com/news/en/N057.html Finding STM32 parts in Shenzhen is mostly a matter of sending a complete BOM instead of asking part by part. Kewei Technology, based in Huaqiangbei, stocks more than 13,000 part numbers and can quote an entire STM32 BOM Wed, 30 Sep 2026 00:00:00 +0000